mirror of https://github.com/kubernetes/kops.git
97 lines
2.9 KiB
Markdown
97 lines
2.9 KiB
Markdown
# Getting Started with kops on OpenStack
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**WARNING**: OpenStack support on kops is currently **alpha** meaning it is in the early stages of development and subject to change, please use with caution.
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## Source your openstack RC
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The Cloud Config used by the kubernetes API server and kubelet will be constructed from environment variables in the openstack RC file. The openrc.sh file is usually located under `API access`.
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```bash
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source openstack.rc
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```
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If you are authenticating by username `OS_DOMAIN_NAME` or `OS_DOMAIN_ID` must manually be set.
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```bash
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export OS_DOMAIN_NAME=<USER_DOMAIN_NAME>
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```
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## Environment Variables
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It is important to set the following environment variables:
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```bash
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export KOPS_STATE_STORE=swift://<bucket-name> # where <bucket-name> is the name of the Swift container to use for kops state
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# this is required since OpenStack support is currently in alpha so it is feature gated
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export KOPS_FEATURE_FLAGS="AlphaAllowOpenStack"
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```
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If your OpenStack does not have Swift you can use any other VFS store, such as S3.
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## Creating a Cluster
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```bash
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# to see your etcd storage type
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openstack volume type list
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# coreos (the default) + flannel overlay cluster in Default
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kops create cluster \
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--cloud openstack \
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--name my-cluster.k8s.local \
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--state ${KOPS_STATE_STORE} \
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--zones nova \
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--network-cidr 10.0.0.0/24 \
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--image <imagename> \
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--master-count=3 \
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--node-count=1 \
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--node-size <flavorname> \
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--master-size <flavorname> \
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--etcd-storage-type <volumetype> \
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--api-loadbalancer-type public \
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--topology private \
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--bastion \
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--ssh-public-key ~/.ssh/id_rsa.pub \
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--networking weave \
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--os-ext-net <externalnetworkname>
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# to update a cluster
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kops update cluster my-cluster.k8s.local --state ${KOPS_STATE_STORE} --yes
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# to delete a cluster
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kops delete cluster my-cluster.k8s.local --yes
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```
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#### Optional flags
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* `--os-kubelet-ignore-az=true` Nova and Cinder have different availability zones, more information [Kubernetes docs](https://kubernetes.io/docs/concepts/cluster-administration/cloud-providers/#block-storage)
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* `--os-octavia=true` If Octavia Loadbalancer api should be used instead of old lbaas v2 api.
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* `--os-dns-servers=8.8.8.8,8.8.4.4` You can define dns servers to be used in your cluster if your openstack setup does not have working dnssetup by default
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# Using external cloud controller manager
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If you want use [External CCM](https://github.com/kubernetes/cloud-provider-openstack) in your installation, this section contains instructions what you should do to get it up and running.
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Enable featureflag:
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```
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export KOPS_FEATURE_FLAGS=AlphaAllowOpenstack,+EnableExternalCloudController
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```
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Create cluster without `--yes` flag (or modify existing cluster):
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```
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kops edit cluster <cluster>
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```
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Add following to clusterspec:
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```
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cloudControllerManager:
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image: jesseh/occm:latest <- you can use this or compile your own
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logLevel: 2
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```
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Finally
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```
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kops update cluster --name <cluster> --yes
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```
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